USA Basketball announced its 12-man roster for the FIBA World Cup, which starts Aug. 30 in Spain.

NBA All-Star point guard Damian Lillard and small forwards Gordon Hayward, Kyle Korver and Chandler Parsons were cut from the 16-man roster that played in several warm-up games.

The final roster features six NBA All-Stars and no one older than 28.

The biggest surprise was the decision to keep three traditional centers: DeMarcus Cousins, Andre Drummond and Mason Plumlee.

"This was without doubt the most difficult selection process we've gone through," USA Basketball managing director Jerry Colangelo said in a news release. "In the end it was about assembling the best team, selecting guys who we felt would be able to best play the kind of style we envision this team playing."

"We are very pleased with the overall effort of every player who was a part of the process," said Krzyzewski, the Duke coach who took over Team USA in 2005. "To select 12 was difficult, because our pool is so good. As we go forward, we not only go forward as 12, we go forward as a pool for USA Basketball."

This roster will play one more warm-up, against Slovenia in Spain, before they open tournament group play opens on Aug. 30 against Finland. Team USA has won the past three major international tournaments: the 2008 Beijing Olympics, 2010 world championships in Turkey and 2012 London Olympics.

Davis and Harden are the only holdovers from the London Olympics, while Curry, Gay and Rose played in the 2010 world championships.

GALLERY: Final Team USA roster

Team USA director Jerry Colangeo (with microphone) and coach Mike Krzyzewski picked 12 players from a much larger pool to play in the FIBA World Cup in Spain. Click through for their choices. David Banks, USA TODAY Sports

PG/SG Stephen Curry: The Warriors All-Star is the best shooter in the NBA and should stretch opposing defenses whether at point, where he plays for Golden State, or off the ball. David Banks, USA TODAY Sports